The correct answer to this question is this one: a.) bottleneck effect. Increased poaching nearly led to the extinction of the American bison. The kind of effect that does this example represent is called the bottleneck effect. Hope this helps answer your question.
Answer:
all 20
Explanation:
It is impossible to know how many individuals will have the disease at the end without knowing other factors such as the condition where the subjects are being held, trial specifications and safety measures, etc. Based on the information provided, the best prediction that can be made is that all 20 subjects will have the disease. This is because since none of them are immune the disease will spread between the patients/subjects through contact or testing equipment.
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
Besides producing sugar for itself a plant also needs to absorb nitrogen to build proteins, salts to make concentration gradients and potassium to make enzymes.
<u>Explanation:</u>
Plant sugar is glucose and plants produce it by the process of photosynthesis making use of energy from sunlight, carbon dioxide absorbed from the atmosphere and the presence of chlorophyll in its parts. Plants also require components other than this. Nitrogen is essential to make proteins and it cannot be directly absorbed from the atmosphere but has to be absorbed from the soil.
Potassium is an essential component which is absorbed from the soil. It facilitates the activation of enzymes which play a crucial role in plant metabolism. When plants lack potassium they won’t have enough energy for proper growth and will have poorly formed roots and weak stems.
Answer:
Separating a cell into 2 different parts allows for the creation of specific environments in a cell.
Explanation:
Separating a cell into 2 different parts allows for the creation of specific environments in a cell.One example would be Nuclear Envelope.The nuclear envelope is a double membrane Where the two membranes are separated by space.Another example would be the Endoplasmic Recticulum. The endoplasmic recticulum has two different parts which are the smooth er and the rough er. The smooth er is smooth at the top because it lacks ribosomes.The rought er is rough because it has studded ribosomes on the outer surface of the membrane.
